Sectional culvert.



R. HARDESTY.

SEGTIONAL OULVERT.

APPLIUATION FILED smut. 27, 1911.

1 ,044; 0 44, Y Pateanted Nov. 12, 1912.

WITNESSES; [IVVENTOR Z M m Budd f/ardesf norm HmEsrY; or DENVER,COLORADO.

SECTIONAL CULVEBT.

7 Application filed September 27, 1.911. Serial K013151323.

To all whom it mayco'ricem: I Be it known that I, RUDD H Rn'Es'rY', a.citizen. of the United States of America, re- :sidin "at Denver, in thecounty of. Denver and tate of Colorado, have invented cer-.

tainnew and useful Improvements in Sectional' Culverts, of which thefollowing is a specification.

My invention relates to new and useful 16,1mprovements 1n sectionalculverts and its object resides in the provisionof a culvertoftln's'character, the sections of which are each composed; of twosemicircular sections which are formed with inte ral means whereby theymay be-readilyan firmly con- ;nect ed without the use of rivets, bo'ltsor other, separate fastening devices. Culverts thus constructed arestrong, durable and in- ,-'expensive and the sections of which they arecomposed are nestable to facilitate transpor-' -:tation and handling.

' An embodiment of I .trated in -the a'ccom anying drawings in thevarious views of w ich like parts are simi- "3'5 lai'ly designated andin which,

. Figure 1 represents a side elevation of a I section of the improvedculvert. Fig. 2 a

perspective view ofone of the semi-circular.

alves of which said sections are composed.

30 Fig. 3, a transverse section along the line 3-3, Fig. 1, drawn to anenlarged scale, and Fig. 4, a similar section taken along the line 4-4,Fig. 1.

i Referrin to the reference c aracters the numeral 2. desighates thesemi-circular sections of which each culvert section is composed andwhich,

are made of sheet-metal referably formed with transverse corrugations(notshown) for the purpose of strengthening the structure.

Each of the two halves of the culvertsections is provided along itslongitudinal Y edges with oflset lips 3 which provide seats 4 5 toreceive the corresponding edges of the other half when the parts areassembled in the construction of the culvert.

The lips 3 are formed integrally of the metal of which the semi-circularsections are 'composed, by providing the latterat their longitudinaledges with pairs of transverse, preferably parallel slits 4, and thenoflsetting the portions between them either nwardly or outwardly, all ofwhich is readlly 56 accomplished in one operation by means of anordinary stamping press.

my invention is illusdrawings by numerical said halves are assembled toform the cul ve'rt, thelips. on the one will be exposed upon thecircumferential surface thereof while those on the other extend alongthe interior surface of the same, as isclearly shown in the drawings.

The lips of the two halves of'the culvert sections extend substantiallyparallel to the intermediate portions of the sections ata distance fromsaid portions slightly exceeding the thickness of the material of whichthe sections are made so that the lips on each,

half will lie flat -aga inst the surface of the other half. The jointbetween the sections of each culvert-section will thereby be tightlyclosed and the Sit-lClSQCtlODS may be instantly placed in their relativepositions without fitting and without the use of tools. 'The lips 3 ofeach half of the culvert sections are outof line with those on the otherhalf of the same section so as not to interare assembled.

Having thus descrlbed my invention what I claim and desire to secure byLetters-Patent is:

1. A culvert composed of two semi-circular sections each having seatsfor the 10m gitudinal edges of the other, the said seats being formed byinwardly oflset lips on one section and outwardly ofi'set lips on theother sectionfwhich lips extend substantially parallel to theintermediate portions of the sectionsat a distance from said portionsSpecification of Letters Pate nt. Patented N0 fl12,

The lips of the two complementary halves .of each culvert-section arerespectively set inwardly and outwardly so that when the fere with eachother when the two halves slightlyexceeding the thickness of thematerial of which said sections are made.

2. A semi-circular culvert-section having along its longitudinal edges,seats formed by offsetting portions of the material of which saidsection is composed, between transverse slits, said. portions extendingsubstantially parallel to the intermediate parts of the sections, at adistance from said parts slightly exceeding the thickness of thematerial of which said sections are made.

3. A culvert composed of semi-circular sections one of which has seatsfor the longitudinal edges of the other, said seats being formed byofi'set lips integral with the ma terial of which said section iscomposed,

and extending substantially parallel to the intermediate portions of thesections, at a distance from said portions sllghtly exceeding thethickness of the material of which said sections {T6 nude.

4:. A culvert composed of two semi-circular sections, each having seatsfor the 1011- gitudinui ed; 5 of the other the said seats being formed 0inwardly eflset lips on one sECliiOil and outwardly offset lips on theother section, and said lips being formed ei'eg'rzzl with ihe materialof which said 10 sections are composed, and extending substant ialiyparallel to the intermediate portions of the sections, a: a distancefrom said pm'tions slightly ex eexiing the thickness of ihe material ofwhich. Said eeetions are made.

in testimony aheyeoi' I.

signature in presence iii ewe fl'iineSSQS.

' E- CUDD H AJEDESFY.

have affixed my 1.5

